I like this proposal. I'd make contains? an alias for contains-key?
with a deprecation warning, and just forget about seq-contains? in
favor of contains-val?
On Thursday, April 29, 2010, ataggart <alex.tagg...@gmail.com> wrote:
> I know it won't matter, but for posterity if nothing else...
>
> Functions named contains-key? and contains-val? would make a lot more
> sense to me than the current contains? and new seq-contains?. Anyone
> looking at contains-val? should expect it to be O(n). The only
> effective difference would be that the test value for contains-val? is
> consistently a single value rather than a [key value] tuple for maps.
>
> Lists:
> (contains-key? '(:foo :bar) 0)
> Exception
> (contains-val? '(:foo :bar) :foo)
> true
>
> Vectors:
> (contains-key? [:foo :bar] 0)
> true
> (get [:foo :bar] 0)
> :foo
> (contains-key? [:foo :bar] 2)
> false
> (contains-val? [:foo :bar] :foo)
> true
> (contains-val? [:foo :bar] :baz)
> false
>
> Maps:
> (contains-key? {:foo :bar} :foo)
> true
> (get {:foo :bar} :foo)
> :bar
> (contains-key? {:foo :bar} :baz)
> false
> (contains-val? {:foo :bar} :bar)
> true
> (contains-val? {:foo :bar} :baz)
> false
>
> Sets:
> (contains-key? #{:foo :bar} :foo)
> true
> (get #{:foo :bar} :foo)
> :foo
> (contains-key? #{:foo :bar} :baz)
> false
> (contains-val? #{:foo :bar} :foo)
> true
> (contains-val? #{:foo :bar} :baz)
> false
>
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--
Mark J. Reed <markjr...@gmail.com>
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